Superiority of Polyurea Waterproofing

For many years, polyurethane materials and epoxy coatings have been widely used for waterproofing in various construction facilities. With the emergence of polyurea, the overall level of waterproofing projects has taken a new leap forward.

Polyurea waterproofing technology organically integrates new materials, new facilities, and new processes. It represents a revolutionary leap from traditional construction techniques and is currently one of the most advanced waterproofing construction technologies internationally.

Advantages of Polyurea Waterproofing

1. Rapid curing, allowing continuous spraying on both horizontal and vertical surfaces without sagging.
2. Not sensitive to humidity or temperature, with good thermal stability.
3. 100% solid content, VOC-free, pollution-free, and environmentally friendly.
4. Excellent physical properties with strong adhesion to concrete substrates.
5. Seamless coating, providing superior waterproofing performance.
6. High elongation rate, resistant to cracking under thermal cycling.
7. Good weather resistance, no powdering or discoloration.

Applications and Construction of Polyurea Waterproofing

Usage: Polyurea waterproofing materials are mainly used for rooftop waterproofing of high-end building facilities, industrial factories, vapor barriers in cold storage, reservoirs, bridges, tunnels, underground projects, cooling towers in power plants, wastewater treatment ponds, aquariums, swimming pool liners, and other areas.

Roof Waterproofing

The construction process of polyurea coatings consists of substrate preparation, priming, and polyurea topcoat application.

1. Substrate preparation is key to ensuring construction quality. This can be divided into metal substrate and concrete substrate preparation. For metal substrate, first, sandblast the substrate to Sa2.5 level. For defects like weld seams, use epoxy filler to level it. After the epoxy filler has cured, grind it smooth with an angle grinder. Then, clean the substrate and apply two coats of the corresponding primer either by rolling or brushing. For concrete substrate, treat the precast concrete with shot blasting or remove surface dust and residues using an angle grinder or a high-pressure water jet. Once the substrate is completely dry, use a filler to level the surface. For areas that need filling, grind them smooth with an angle grinder after the filler has cured. Afterward, remove surface contaminants and apply a coat of the corresponding primer.
2. The maximum interval between the application of the primer coats is 24 hours, and the minimum is 3 hours.
3. The polyurea topcoat should be applied between 3 to 168 hours after the primer application. If the interval exceeds 168 hours, reapply a coat of primer a day before the polyurea application. Before applying the topcoat, use dry high-pressure air to blow away any surface dust.

Feiyang has been specializing in the production of raw materials for polyaspartic coatings for 30 years and can provide polyaspartic resins, hardeners and coating formulations. Some of our polyaspartic coating formulations: Polyaspartic Coating

Feel free to contact us: marketing@feiyang.com.cn

Our products list:

• Polyaspartic Resin
• Isocyanate Hardener
• Special Chemical

Learn more polyaspartic knowledge: Polyaspartic FAQ

Shenzhen Feiyang Protech Corp., Ltd. specializes in researching and producing polyaspartic polyurea resin and other new chemical products. We are recognized as a "National Special New Key Little Giant" and a "State-level High-tech Enterprise", with more than 50 polyaspartic polyurea invention patents. We also participated in the preparation of 13 industry standards for polyaspartic polyurea materials as a leading company in this field, ranking No.1 in the Chinese market.

In the coating industry, polyaspartic polyurea is used in construction machinery, automobile, containers, fan blades, marine heavy corrosion protection, and high-end industrial and commercial floor coatings. In the adhesive field, it is mainly used in sealants, stone adhesives, electronic adhesives, film circuit packaging adhesives, and other high-end applications. In the waterproofing materials sector, it is primarily used in hydroelectric dams, water parks, building waterproofing repair materials, and other areas. In the structural materials field, it is applied to curling tracks, artificial ice skating rinks, and other structural materials.

Polyaspartic polyurea is considered a high-end new material in the strategy of manufacturing power. We have broken the foreign technology monopoly and filled the domestic market gap. Due to its comprehensive characteristics of "Environmental protection, Energy saving, and Long durability", polyaspartic polyurea can contribute to the realization of genuine carbon neutrality in the coatings, adhesives, and materials industries.

Since 2012, Feiyang polyaspartic ester resin has been supplied overseas. It has been widely used to replace Bayer's current polyaspartic system in many coating companies and has been applied in anti-corrosion and waterproofing by international coating companies.